        Translation of the russian "Startup Manual" for Aleste 520EX

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                 On startup and adjustment of your computer.

  Recommendations before first inclusion the most common and here we will
not write about them. Carefully collected from healthy details computer
must earn immediately. However at use Chipset different series may observed
unstable work computer in certain modes. For reliable work We recommend
immediately before the first inclusion to make two improvements which will
be written below.

  The first inclusion, we recommend without ROM D31. Below are diagrams of
some signals in this mode. Also are Chart main signals in Depending on the
mode screen.

  We recommend apply Products these on wiring diagram board. All programmable
chips and basic BIS should be installed on the panels (D70 - optional). Case
in Volume what we repeatedly observed cases of failure drive controller so
that the disk reads were normal and at record disk information on it port;
also does formatting. Moreover occur it can not permanently.

  On time adjustment should vypayat right on board output resistor R6 order
to include them image.

  For more reliable operation of the scheme must also set capacitor capacity
510 pF between 3 and 7 findings D77.

  Depending on the instance D65 is dictated by the need capacitor C4, and
determined she the absence of small horizontal synchronization failures in
different modes graphics.

  Weak interference the image in low graphics mode permission may observed
because different Performance Chipset D50 - D53. They eliminated installation
capacitor small capacitance (several tens of pF) one of the signals XTAL, RRC
or MVI.

  If the D87, D88 are applied IR26, some resistors R28 - R31 can not install,
and R32 need necessarily.

  If you do not do revision 1, then the output should be 9 D24 install
capacitor 30 - 80 pF, and if as D87 D88 applied IR32, the diode VD12 can
replace the jumper and Resistors R28-R32 install. In this case it is better
to apply IR32.

  If you do not do revision 2, then D54 is better to use 555 series and D26
Series 1533. In this case, on the spot D62 may work not all instances of chips.

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                                 On the PCB.

  It should be noted that the printed circuit board is only for Corps similar
corps computers PATISONIC 48ST, FORUM AFFILIATES 2 and hardly advisable to
install it another body.

  In print board there are 4 errors. To eliminate them must do following:
cut the wire coming left on conclusion 8 D73 (near the diode VD9) and join
the rest left part this conductor with withdrawal 8 D72; cut connection
between findings 13 and 14 of D66 and the bottom of board output resistor
R15 solder found 13 D66; to post a systematic connector signal -WAIT; remove
closure of the contact area vias on the bus +5 V chip under D66.

                                Refinement 1.

             1+---+    1533LI1
  D88/6 ------ & 
             2   3
  D32/2 ------   +----+
              +---+    
          +------------+
            4+---+
          +--- & 
             5   6
  D40/8 ------   +----- D24/9
              +---+

  The elements VD12 and R136 excluded. MORE chip soldered findings Food on D29.
Conclusions 1 and 2 connected with lower on board contact sites VD12 and R136.
Conclusion 6 connects with top contact platform R136. At the conclusion of 1
additional Products need set 2K resistor to +5 V if applicable Products IR32.

                                Refinement 2.

  D39/15 -----------------------+
                  4+-----+         10+-----+
  D41/11 ----------S  T       +-----S  T 
                  3     5         11     9
  D39/14 ----------C   Q+------------C   Q+-------------- D54/15
  (CLK)           2               12     
            +------D   _6       +---D   _8
                 1_   Q+--+       13_   Q+--
              + --R           + --R    
                  +-----+           +-----+
            +---------------+                      D54/15
                                      1533TM2

  When This excluded elements C5 and R134 (last closed with a jumper). MORE
chip soldered findings Food on D42. Conclusions connected with closest pads
required signals. Printed conductor coming to the conclusion that 15 D54, cut.

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                 On the introduction of the regime "turbo".

  We have a scheme on two chips (TM2, and LA3) allows you to enter this mode.
But for reliable operation of computer in this mode requires the processor
Z80H or TOSHIBA TMPZ84C00AP-8. In this mode will not boot some Games in mode
AMSTRAD due to the reduced waiting time at positioning head drive. This mode
is useful mainly to those who wrote fairly large program for reduce compile
time. If you want to do this option, contact the firm PATISONIC.

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             On increasing the capacity of a disk mode AMSTRAD.

  To do this, you must enter switch sides disc. Suit any closing switch with
one group and fixation. One conclusion that normally open group joined with a
signal-SIDE, and the second - to GND. When the closed switch used second side
disc. In firm computer AMSTRAD CPC 6128 was applied unilateral drive and
Gondola turning upside discs with a diameter 3,00 (!) inches. Closure switch
equivalent reversal disc. CAUTION When MSX-DOS switch must be opened.

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                              Translation Notes

The two so-called "1533xxx" chips are (similar) to russian "K555xxx" chips,
maybe 1533 series and 555 series refer to western 74LS and 74HC variants or so.
  1533LI1 = K555LI1 = 74LS08 = Quad AND gates
  1533TM2 = K555TM2 = 74LS74 = Dual flipflop
Expressions like "D41/11" do refer to Pin 11 of chip D41 in the schematics.
